JPS6319208A - Premolded product - Google Patents
Premolded productInfo
- Publication number
- JPS6319208A JPS6319208A JP61163450A JP16345086A JPS6319208A JP S6319208 A JPS6319208 A JP S6319208A JP 61163450 A JP61163450 A JP 61163450A JP 16345086 A JP16345086 A JP 16345086A JP S6319208 A JPS6319208 A JP S6319208A
- Authority
- JP
- Japan
- Prior art keywords
- polyethylene terephthalate
- resistant
- heat
- chemical
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 54
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 54
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 47
- 239000000126 substance Substances 0.000 claims abstract description 36
- 229920005989 resin Polymers 0.000 claims abstract description 29
- 239000011347 resin Substances 0.000 claims abstract description 29
- 229920001230 polyarylate Polymers 0.000 claims abstract description 11
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000001746 injection moulding Methods 0.000 claims abstract description 6
- 229920001577 copolymer Polymers 0.000 claims abstract description 4
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 3
- 239000004417 polycarbonate Substances 0.000 claims abstract description 3
- 229920001038 ethylene copolymer Polymers 0.000 claims abstract 2
- 229920000642 polymer Polymers 0.000 claims description 34
- 239000000203 mixture Substances 0.000 claims description 9
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 3
- 239000004711 α-olefin Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- 238000000465 moulding Methods 0.000 abstract description 5
- 125000004432 carbon atom Chemical group C* 0.000 abstract description 2
- 229920002959 polymer blend Polymers 0.000 abstract 3
- 239000010410 layer Substances 0.000 description 27
- 238000002347 injection Methods 0.000 description 17
- 239000007924 injection Substances 0.000 description 17
- 230000008569 process Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 5
- 210000003739 neck Anatomy 0.000 description 5
- 230000001954 sterilising effect Effects 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- 238000000071 blow moulding Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 239000012792 core layer Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-M terephthalate(1-) Chemical compound OC(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-M 0.000 description 2
- 230000002087 whitening effect Effects 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
- B29C45/1646—Injecting parison-like articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
- B29C45/1646—Injecting parison-like articles
- B29C2045/1648—Injecting parison-like articles the parison core layer being a barrier material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は耐熱性耐熱性多層遺体製造成形品に関する。[Detailed description of the invention] [Industrial application field] TECHNICAL FIELD The present invention relates to a heat-resistant, heat-resistant multilayer molded article for mortuary production.
従来より、多層パリソンを、まず表面層となる合成樹脂
だけを適量射出しておき、次いで内核層となる合成樹脂
をさらに射出して型キャビティを充填する、特開昭４８
−３６２５５号記載の方法とか最初に第１の合成樹脂の
溶融体を、次いで第一の合成樹脂の溶融体と第二の合成
樹脂の溶融体とを同時に型キャビティに射出する、特開
昭５３−１４７５９号記載の方法などにより、成形して
おき、次いで吹込成形して多層容器を得ることが行われ
ている。Conventionally, in order to make a multilayer parison, an appropriate amount of synthetic resin for the surface layer is first injected, and then a further synthetic resin for the inner core layer is injected to fill the mold cavity.
JP-A-53-36255 describes a method in which a first synthetic resin melt is first injected, and then a first synthetic resin melt and a second synthetic resin melt are simultaneously injected into a mold cavity. A multilayer container is obtained by forming the container in advance by a method such as that described in No. 14759, and then by blow molding.
また、飽和ポリエステル樹脂製２軸延伸成形壜体は増体
の口部を含む首部から肩部にかけての部分が全く延伸を
受けないかまたは延伸を受けてもほんのわずかであるた
めに、増体の口部を含む首部から肩部にかけての部分は
、充分に延伸を受けて成形される胴部に比べて耐薬品性
。In addition, in the case of biaxially stretched bottles made of saturated polyester resin, the area from the neck to the shoulder, including the opening of the bottle, is not stretched at all or even if it is stretched, it is only slightly stretched. The area from the neck to the shoulders, including the mouth, is more chemical resistant than the body, which is fully stretched and molded.
機械的強度が劣るので、首部だけを温度側ａＫより結晶
化により白化させることが行われている。Since the mechanical strength is poor, only the neck portion is whitened by crystallization from the temperature side aK.
上記のように加熱処理により首部を白化させたものは白
化部分により外観が損われ、その分商品価値が劣る欠点
がある。As mentioned above, products whose necks are whitened by heat treatment have the disadvantage that the appearance is impaired by the whitened portions and the commercial value is correspondingly inferior.
ポリ二テレンテレフタレート単体ではなくポリエチレン
テレフタレート／アクリロニトリル／ポリエチレンテレ
フタレートの三層構造で増体を溝底しても、それによっ
てバリアー性等の特性が付与されるにとどまり、増体首
部の機械的強度とか耐熱性とか耐薬品性といった特性は
白化処理しない限り、十分には付与されない。Even if the groove bottom is made of a three-layer structure of polyethylene terephthalate/acrylonitrile/polyethylene terephthalate instead of polyniterene terephthalate alone, it will only provide properties such as barrier properties, and the mechanical strength of the neck of the filler will be reduced. Properties such as heat resistance and chemical resistance cannot be sufficiently imparted unless whitening treatment is applied.
また、底部の耐熱性を改善するために複数のリプを底部
に形成して底部の延伸効果を高めろことが行なわれてい
るが、そのように構成しても底部全体にわたって延伸効
果が高められるわけではなく、また、底部の構造が複数
のリプが存在する形状であるため、吹込成形後の離型性
が十分とはいえないという問題点がある。Additionally, in order to improve the heat resistance of the bottom, multiple lips are formed on the bottom to enhance the stretching effect of the bottom, but even with such a configuration, the stretching effect is enhanced over the entire bottom. Moreover, since the bottom structure has a plurality of lips, there is a problem that the mold releasability after blow molding is not sufficient.
そこで本発明が解決しようとする問題点はボトル耐熱性
及び口部耐熱性を備え、ホット充填時の収縮が小さく、
シール性がよく、しかも、耐久性にすぐれ、開栓トルク
が低下することのない多層ボトルを成形することができ
る予備成形品を提供することにある。Therefore, the problem that the present invention aims to solve is that the bottle has heat resistance and mouth heat resistance, and shrinkage during hot filling is small.
To provide a preformed product which can be molded into a multilayer bottle with good sealing performance, excellent durability, and no decrease in opening torque.
Ｃ問題点を解決するための手段〕
本発明は上記の問題点を解決するもので、「ポリエチレ
ンテレフタレート層及びポリアリレート、ポリエチレン
テレフタレートとポリアリレートのブレンドポリマー、
ポリカーボネート、ポリ−４−メチルペンテン−１プロ
ピレン／工チンン共重合体、４−メチルペ″ＰＩ−１と
線状α−オレフィン（炭素原子数４ないし１８）との共
重合体などの耐熱性且つ耐薬品性樹脂層とからなる、射
出成形法により成形された、一端を閉じた形状の予備成
形品であって、口部は耐熱性且つ柑薬品性倒詣／ポリエ
チレンテレフタレート／耐熱性且つ１耐薬品性樹脂／ポ
リエチレンテレフタレート／耐熱性且つ耐薬品性樹脂の
表裏両面が耐熱性且つ耐薬品性樹脂よりなる多層構造よ
りなり、且つ口部の開口端外表面は耐熱性且つ耐薬品性
＆１指により形成され、一方円筒胴部及び底部はポリエ
チレンテレフタレート／耐熱性且つ耐薬品性樹脂／ポリ
エチレンテレフタレートの三層構造よりなり、且つ、内
側のポリエチレンテレフタレート層は薄く形成され、耐
熱性且つ耐薬品性樹脂層は口部の方べ行くにつｆして厚
くなっている２軸延伸成形壜体の予備成形品。」を要旨
とするものである。Means for Solving Problem C] The present invention solves the above problems, and includes a polyethylene terephthalate layer and a polyarylate, a blend polymer of polyethylene terephthalate and polyarylate,
Polycarbonate, poly-4-methylpentene-1 propylene/propylene copolymer, copolymer of 4-methylpentene PI-1 and linear α-olefin (4 to 18 carbon atoms), etc. A preformed product with one end closed, formed by injection molding and consisting of a chemical resin layer, and the mouth part is made of heat-resistant and chemical-resistant material / polyethylene terephthalate / heat-resistant and chemical-resistant material. Resin / Polyethylene terephthalate / Heat resistant and chemical resistant The front and back sides of the resin are made of a multilayer structure made of heat resistant and chemical resistant resin, and the outer surface of the opening end of the mouth is made of heat resistant and chemical resistant & 1 finger. On the other hand, the cylindrical body and bottom are made of a three-layer structure of polyethylene terephthalate/heat-resistant and chemical-resistant resin/polyethylene terephthalate, and the inner polyethylene terephthalate layer is formed thinly, and the heat-resistant and chemical-resistant resin layer is A preformed product of a biaxially stretched bottle that becomes thicker toward the mouth.
而して本発明において、円筒胴部を構成する耐熱性且つ
耐薬品性樹脂よりなる中間層が断面厚さで内側１／４
付近（１１５〜３／１０ ） に位置し、且つ射出
成形流れ方向に対し、３／１０００〜６／１０００の傾
きを有するのが望ましい。In the present invention, the intermediate layer made of heat-resistant and chemical-resistant resin constituting the cylindrical body has a cross-sectional thickness of 1/4 of the inner layer.
It is desirable to be located in the vicinity (115 to 3/10) and have an inclination of 3/1000 to 6/1000 with respect to the injection molding flow direction.
本発明において、耐熱性且つ耐薬品性樹脂として最も好
ましいものはポリエチレンテレフタレートとポリアリレ
ートのブレンドポリマーである。In the present invention, the most preferred heat-resistant and chemical-resistant resin is a blend polymer of polyethylene terephthalate and polyarylate.
而して耐熱性且つ耐薬品性樹脂としてポリエチレンテレ
フタレートとポリアリレートのブレンドポリマーを用い
た場合において、口部中の前記ブレンドポリマーの含有
量は重量比にして２０％以上５０％以内が望ましい。２
０％より下のときは耐熱性及び耐薬品性が充分に得られ
ないので好ましくない。一方５０チより上のときは、ポ
リエチレンテレフタレートのポリアリレートのブレンド
ポリマーの延伸適性温度の差が大きくなり、延伸ブロー
成形時に白化が発生するので好ましくない。When a blend polymer of polyethylene terephthalate and polyarylate is used as the heat-resistant and chemical-resistant resin, the content of the blend polymer in the mouth is preferably 20% to 50% by weight. 2
When it is less than 0%, sufficient heat resistance and chemical resistance cannot be obtained, which is not preferable. On the other hand, if it is more than 50 inches, the difference in the stretching suitability temperature of the polyarylate blend polymer of polyethylene terephthalate becomes large, and whitening occurs during stretch blow molding, which is not preferable.
また円筒胴部中のＭｉｌ記ブレンドポリマーの含有１は
重量比にして３％以上が望ましい。３チ二り下のときは
耐熱性及び耐薬品性が充分に得られないので好ましくな
い。最適含有量は５〜１５％で、この範囲においては耐
熱性、成形性ともに良好である。次に口部中の前記ブレ
ンドポリマーの含有量は２０％以上が望ましい。２゜チ
より下のときは口部の耐熱性、即ち、ホット充填時の収
縮が小さく、ンール性良好な特性が得られないので好ま
しくない。次に底部中の前記ブレンドポリマーの含有ｔ
は３チ以上２０％以下が望ましい。３％より下のときは
充分な耐熱性が得られないので好ましくない。一方２゜
チより上のときは落下強度が低下するので好ましくない
。Further, the content of the Mil blend polymer in the cylindrical body is preferably 3% or more by weight. If it is less than 3 cm, it is not preferable because sufficient heat resistance and chemical resistance cannot be obtained. The optimum content is 5 to 15%, and in this range both heat resistance and moldability are good. Next, the content of the blend polymer in the mouth portion is preferably 20% or more. If it is less than 2°, the heat resistance of the mouth portion, that is, the shrinkage during hot filling is small, and good unrolling properties cannot be obtained, which is not preferable. Then the content t of said blended polymer in the bottom
is preferably 3 inches or more and 20% or less. If it is less than 3%, sufficient heat resistance cannot be obtained, which is not preferable. On the other hand, if it is higher than 2 degrees, the drop strength decreases, which is not preferable.
本発明において、口部の表裏両面及び開口端を形成する
耐熱性且つ耐薬品性４１（脂層は口部、に耐熱性と耐薬
品性を付与するものである。またポリエチレンテレフタ
レート層間に存在する耐熱性且つ耐薬品性樹脂層は表裏
両面を形成する耐熱性且つ耐薬品性樹脂層と共に口部に
耐熱性を付与する作用をするものである。In the present invention, the heat-resistant and chemical-resistant layer 41 (the fat layer that forms both the front and back sides of the mouth and the opening end provides heat resistance and chemical resistance to the mouth). The heat-resistant and chemical-resistant resin layer functions to provide heat resistance to the mouth portion together with the heat-resistant and chemical-resistant resin layers forming both the front and back surfaces.
次に円筒胴部及び底部の内側のポリエチレンテレフタレ
ート層は薄く形成され、しかもその外側に耐熱性且つ耐
薬品性樹脂層が存在していることにより、円筒胴部及び
、底部の熱的安定性はきわめて高い。また耐熱性且つ耐
薬品性樹脂層の厚みが口部へ行くにつれて厚くなってい
るので、半延伸もしくは未延伸の壜丙部にも高い熱的安
定性が付与され、熱金型から収縮変形を生ぜしめること
なく、雌型することができる。Next, the polyethylene terephthalate layer inside the cylindrical body and bottom is formed thinly, and the heat-resistant and chemical-resistant resin layer exists on the outside, so that the thermal stability of the cylindrical body and bottom is improved. Extremely expensive. In addition, since the thickness of the heat-resistant and chemical-resistant resin layer increases toward the mouth, high thermal stability is imparted to the half-stretched or unstretched bottle, and shrinkage deformation from the hot mold is prevented. It is possible to form a female form without giving birth.
また、底部についても耐熱性且つ耐薬品性樹脂層の存在
により良好な離型性が付与され、しかも底部の方へ行く
につれて耐熱性且つ耐薬品性樹脂層が薄く形成されてい
るので、延伸プロー成形後において落下強度のすぐれた
底部を形成することができる。In addition, the presence of a heat-resistant and chemical-resistant resin layer at the bottom provides good mold release properties, and the heat-resistant and chemical-resistant resin layer becomes thinner toward the bottom, making it easier to use with the drawing protrusion. After molding, a bottom portion with excellent drop strength can be formed.
射出成形装置として、日清ＡＳ Ｂ機械■製多ｒｆｉ２
軸延伸プロー成形機Ａ Ｓ Ｂ ５ Ｑ）ＩＴ、及びホ
ットランナ−ノズルとして中心よりコア層をその外周よ
りポリエチレンテレフタレート層を共射出する二層ホッ
トランナ−を用いて２軸延伸成形壜体の予備成形品を成
形した。As the injection molding equipment, Nissin AS B Machine ■Manufactured rfi2
Axial stretch blow molding machine AS B 5 Q) Preparation of biaxial stretch molded bottles using IT and a two-layer hot runner that co-injects a core layer from the center and a polyethylene terephthalate layer from the outer periphery as a hot runner nozzle. A molded article was molded.
先ず、第１図ｔａ）のように型キャビティ（３）内にポ
リエチレンテレフタレート（三井石油化学製。First, as shown in Figure 1 (ta), polyethylene terephthalate (manufactured by Mitsui Petrochemicals) was placed inside the mold cavity (3).
ＰＥＴレジングレードＪ １２５ ） （１）を射出速
度１８ｆ！ ／ＥＩＢｃで１．６秒間単独射出した。PET resin grade J 125) (1) at an injection speed of 18f! /EIBc for 1.6 seconds.
次に第１図（ｂｌのようにポリエチレンテレフタレート
（１）の射出を停止すると同時にポリエチン゛ ンテレ
フタレートとポリアリレートのブレンドポリマー（ユニ
チカ製、Ｕポリマー８４００）（以下Ｕポリマーと称す
る）（２）を射出開始した。Next, as shown in Figure 1 (bl), the injection of polyethylene terephthalate (1) was stopped, and at the same time, a blend polymer of polyethylene terephthalate and polyarylate (manufactured by Unitika, U Polymer 8400) (hereinafter referred to as U Polymer) (2) was injected. Injection started.
そして、０．１秒以内の停止時間をおいてポリエチレン
テレフタレートの射出を再開始し、ポリエチレンテレフ
タレート（１）とＵポリマー（２）を共射出した。その
ときＵポリマーは２１Ｆ／ＩＩＩｅｃで０．３秒間高速
射出すると共にその間にポリエチレンテレフタレートの
射出速度は１８９／’ｅＣかう２４２／戴に設定変更し
たが、０．１秒停止後、再開の過程において油圧の応答
おくれにより、またＵポリマーの射出圧を高（１２０〜
）に設定したため、設定値２４７／８１Ｉ！ｃのポリエ
チレンテレフタレートの充填はなされなかった（第１図
（ｂ）及び（Ｃ）図示）。Then, injection of polyethylene terephthalate was restarted after a stop time of 0.1 seconds or less, and polyethylene terephthalate (1) and U polymer (2) were co-injected. At that time, the U polymer was injected at a high speed of 21F/IIIec for 0.3 seconds, and during that time the injection speed of polyethylene terephthalate was changed to 189/'eC or 242/Dai, but after stopping for 0.1 seconds, in the process of restarting. Due to the delay in hydraulic response, the injection pressure of U polymer was increased (120~
), the setting value is 247/81I! The filling of polyethylene terephthalate of c was not carried out (as shown in FIGS. 1(b) and 1(c)).
次にυポリマーの射出は停止するが、ポリエチレンテレ
フタレートは２４９７ｓｅｃの射出速度で０．９秒間射
出を続けて、口部の方へ向けてＵポリマーを流動させ、
多層化した。その結果、Ｕポリマーは口部下端近くに至
り、且つより内側の方へ移動せしめられ、外側に厚いポ
リエチレンテレフタレート層が形成された（第１図（ｄ
）図示）。Next, the injection of υ polymer stops, but polyethylene terephthalate continues to be injected for 0.9 seconds at an injection speed of 2497 seconds, causing the U polymer to flow toward the mouth.
Multi-layered. As a result, the U polymer reached near the lower end of the mouth and was moved further inward, forming a thick polyethylene terephthalate layer on the outside (Fig. 1 (d)
).
さらにポリエチレンテレフタレートの単独射出を続けた
まま、射出圧を保圧（８０判）に切替えた。その結果、
Ｕポリマーは口部上端に至り、上端で二またにわかれ、
Ｕポリマー／ポリエチレンテレフタレート／Ｕポリマー
／′ポリエチレンテレフタレート／Ｕポリマーの５層構
造の口部が形成され、３８ｗ１φスクリユーキヤツプ用
の口部を有する、肉厚４．ｌＪｇ、高さ１５２顛、胴部
平均外径２９ＸＩφの予備成形品を得ることができた。Furthermore, the injection pressure was switched to holding pressure (80 size) while continuing to individually inject polyethylene terephthalate. the result,
The U polymer reaches the upper end of the mouth, bifurcates at the upper end,
The mouth part has a five-layer structure of U polymer/polyethylene terephthalate/U polymer/' polyethylene terephthalate/U polymer, and has a mouth part for a 38w1φ screw cap with a wall thickness of 4. A preformed product with a height of 152 mm and an average outer diameter of the body of 29×Iφ was obtained.
第１図（ａ１図示の過程におけるポリエチレンテレフタ
レートの充填量は２８．８Ｆ。Figure 1 (a1) The filling amount of polyethylene terephthalate in the process shown in the diagram is 28.8F.
第１図（ｂ）図示の過程におけるＵポリマー及びポリエ
チレンテレフタレートの充填量は微少量、 −第１図（
ｅ）図示の過程におけるＵポリマーの充填量は５．９９
．ポリエチレンテレフタレートの充填量は０．７９．第
１図（ｄ）及び第１図（６１図示の過程におけるポリエ
チレンテレフタレートの充填量は２１．６）であった。Figure 1 (b) The amount of U polymer and polyethylene terephthalate filled in the illustrated process is very small; - Figure 1 (
e) The loading amount of U polymer in the illustrated process is 5.99
．． The filling amount of polyethylene terephthalate is 0.79. Figure 1(d) and Figure 1 (the filling amount of polyethylene terephthalate in the process shown in Figure 61 was 21.6).
第２図は上記の成形過程におけるポリエチレンテレフタ
レート及びＵポリマーの射出率（７／寞）を射出時間に
対して示すものである。また、第３図はポリエチレンテ
レフタレート及びＵポリマーの充填量（５”）を射出時
間に対して示すものである。FIG. 2 shows the injection rate (7/寞) of polyethylene terephthalate and U polymer against injection time in the above molding process. FIG. 3 also shows the loading amount (5'') of polyethylene terephthalate and U polymer versus injection time.
第２図及び第３図中■、■、■、■は第１図（ａ） （
ｂ） （Ｃ） （ｄ）に示す過程を示すものである。ま
た第４図ｆａ）は予備成形品の高さに対する厚みの変化
を示すものであり、第４図（ｂ）は本発明の予備成形品
の断面図を示すものである。■, ■, ■, ■ in Figures 2 and 3 are shown in Figure 1(a) (
b) (C) This shows the process shown in (d). Further, FIG. 4 fa) shows the change in thickness of the preform with respect to height, and FIG. 4(b) shows a cross-sectional view of the preform of the present invention.
第４図［ａｉ （ｂ）から分るように内側ポリエチレン
テレフタレートの厚さは底部の方へ向うにつれて３〜６
／１０００の傾きを持って薄くなっている。As can be seen from Figure 4 [ai (b), the thickness of the inner polyethylene terephthalate increases from 3 to 6 mm as it goes toward the bottom.
It becomes thinner with a slope of /1000.
また、Ｕポリマーの厚さも同様に変化しており、口部の
方へ向うにつれて厚くなっている。The thickness of the U polymer also varies similarly, becoming thicker towards the mouth.
第１表は口部、胴部、及び底部におけるポリエチレンテ
レフタレート及びＵポリマーの重量（チ）を示す。Table 1 shows the weight of polyethylene terephthalate and U polymer in the mouth, body, and bottom.
表中（）内の数字はＰＥＴ：Ｕポリマーの比率を示す。The numbers in parentheses in the table indicate the ratio of PET:U polymer.
上記のような予備成形品を５〜２０℃の金型内で射出成
形し、８０°〜１１０℃の離型可能な温度まで冷却した
後、引続き予備成形品の円筒胴部の内側は加熱し、外側
は冷却し、Ｕポリマーの存在する断面位置の温度をこれ
と外側に向って対称のポリエチレンテレフタレート断面
位置の温度より高次しかるのち８５〜１００℃の加熱金
型内で１０〜２０秒間熱処理して２軸延伸プロ一成形壜
体を得た。熱処理後、金型から離型するときの離型時の
変形が少なく、特にボトル肩部は延伸しない口部と、延
伸する胴部の中間領域に当り、サポートリング下を中心
に半延伸ないし未延伸部を残し、ヒートセット時にポリ
エチレンテレフタレート単層であれば離型時収縮変形す
るのに対し、本発明の予備成形品をプロー成形したもの
は変形しなかった。、また、ボトル底部も半延伸領域に
当るがこれもＵポリマーの介在により変形を生せしめる
ことなく離型することができた。The preform as described above is injection molded in a mold at 5 to 20°C, and after cooling to a releasable temperature of 80 to 110°C, the inside of the cylindrical body of the preform is heated. , the outside is cooled, and the temperature at the cross-sectional position where the U polymer is present is higher than that at the polyethylene terephthalate cross-sectional position symmetrical to this toward the outside.Then, heat treatment is performed for 10 to 20 seconds in a heating mold at 85 to 100°C. A biaxially stretched professionally molded bottle was obtained. After heat treatment, there is little deformation when the mold is released from the mold, especially in the shoulder of the bottle, which is the middle area between the mouth that is not stretched and the body that is stretched, and the shape is semi-stretched or unstretched mainly under the support ring. If the polyethylene terephthalate single layer was heat-set with a stretched portion left, it would shrink and deform when released from the mold, whereas the preformed product of the present invention, which was blow-molded, did not deform. In addition, although the bottom of the bottle corresponds to the semi-stretched region, this was also able to be released from the mold without causing deformation due to the presence of the U polymer.
第５図はヒートセットなしの成形ボトルの温度による容
器収縮率（％）変化を示すものである。FIG. 5 shows the change in container shrinkage rate (%) depending on the temperature of a molded bottle without heat setting.
第２表はカウンター圧力０．４’％、８５℃でホ、ト充
填後横倒しキャップ殺菌６０秒間後冷却したのちの口部
寸法変化をポリエチレンテレフタレート単層ボトルとポ
リエチレンテレフタレートとＵポリマーの多層ボトルに
ついて示すものである。Table 2 shows the change in mouth dimensions after filling with a counter pressure of 0.4'% at 85℃, sterilizing the cap on its side for 60 seconds, and cooling it for a single layer polyethylene terephthalate bottle and a multilayer bottle made of polyethylene terephthalate and U polymer. It shows.
１）カウンター圧力０．４’ｌ、８５°Ｃ充填横倒しキ
ャップ殺菌６ｏｓｏｃ後、冷却
２）ＰＬ方向、ＰＬ直角方向 各Ｎ ＝ ４の平均値＄
３衣はグラビテイ一方式により、８５°Ｃで充填後１５
分間横倒しキャップ殺菌後冷却したのちの口部寸法変化
をポリエチレンテレフタレート単層ボトルとポリエチレ
ンテレフタレートとＵポリマーの多層ボトルについて示
すものである。1) Counter pressure 0.4'l, 85°C filling, sideways cap sterilization, 6osoc sterilization, then cooling 2) PL direction, PL right angle direction, average value of each N = 4 $
3. The batter was heated at 85°C for 15 minutes after filling using the Gravity one-way method.
This figure shows the change in mouth dimensions of a single-layer polyethylene terephthalate bottle and a multi-layer bottle of polyethylene terephthalate and U polymer after cap sterilization and cooling for a minute.
１）グラビテイ一方式による充填、８５℃充填後１５ｍ
１ｎ横倒しキャップ殺菌後冷却
２）ＰＬ方向、ＰＬ直角方向各Ｎ ＝ ４の平均値〔発
明の効果〕
以上詳記した通り、本発明の予備成形品は（１） 口
部が５層よりなり、且つ口部天部及び表裏両側が耐熱性
且つ耐薬品性樹脂よりなるので、口部耐熱性にすぐれ、
ホット充填時の′収縮が小さく、ンール性が良く、また
、耐久性に富み開栓トルりが低下することがない。1) Filling with Gravity one-way method, 15m after filling at 85℃
1n Sideways cap sterilization and cooling 2) Average value of N = 4 in each of the PL direction and the PL direction [Effects of the invention] As detailed above, the preformed product of the present invention has (1) the mouth part consisting of 5 layers, In addition, the mouth top and both front and back sides are made of heat-resistant and chemical-resistant resin, so the mouth has excellent heat resistance.
It has low shrinkage during hot filling, has good unrolling properties, and is highly durable, with no reduction in opening time.
（！ｌ） 層間に耐熱性且つ耐薬品性樹脂層が介在す
ることによりヒートセットなしの部分の収縮率が改善さ
れ、口部のサポートリング下を中心とする半延伸ないし
未延伸領域及び底部の半延伸領域を収縮変形させること
なく離型することができる。(!l) By interposing a heat-resistant and chemical-resistant resin layer between the layers, the shrinkage rate of the non-heat-set area is improved, and the semi-stretched or unstretched area centered under the support ring at the mouth and the bottom area are improved. The mold can be released without shrinking or deforming the semi-stretched region.
（＋Ｉｌ＋ 内側ポリエチレンテレフタレート層が薄
く、耐熱性且つ耐薬品性樹脂層が予こ；Ａ成形品の内側
に寄っているので、予備成形品内側より高温加熱し、一
方外側は冷却してＵポリマー／・、 ポリエチレンテレ
フタレートの温度差をつけろことができ、延伸ブロー成
形性が良好である。(+Il+ The inner polyethylene terephthalate layer is thin and the heat-resistant and chemical-resistant resin layer is preformed; since it is closer to the inside of the A molded product, it is heated to a higher temperature from the inside of the preform, while the outside is cooled to form the U polymer/・Polyethylene terephthalate can be made at different temperatures and has good stretch blow moldability.
第１図（１）ないしくｅｌは本発明の予備成形品の成形
過程を示す断面図、第２図は射出時間対射出率のグラフ
、第３図は射出時間対充填量のグラフ、第４図（ａ）は
厚さと高さの関係を示す図、第４図（ｂｌは本発明の予
備成形品のｉｆｒ面図である。Figure 1 (1) or el is a sectional view showing the molding process of the preformed product of the present invention, Figure 2 is a graph of injection time versus injection rate, Figure 3 is a graph of injection time versus filling amount, and Figure 4 is a graph of injection time versus filling amount. Figure (a) is a diagram showing the relationship between thickness and height, and Figure 4 (bl is an ifr side view of the preformed product of the present invention).
Claims (1)
リエチレンテレフタレートとポリアリレートのブレンド
ポリマー、ポリカーボネート、ポリ−４−メチルペンテ
ン−１プロピレン／エチレン共重合体、４−メチルペン
テン−１と線状α−オレフィン（炭素原子数４ないし１
８）との共重合体などの耐熱性且つ耐薬品性樹脂層とか
らなる、射出成形法により成形された、一端を閉じた形
状の予備成形品であって、口部は耐熱性且つ耐薬品性樹
脂／ポリエチレンテレフタレート／耐熱性且つ耐薬品性
樹脂／ポリエチレンテレフタレート／耐熱性且つ耐薬品
性樹脂の表裏両面が耐熱性且つ耐薬品性樹脂よりなる多
層構造よりなり、且つ口部の開口端外表面は耐熱性且つ
耐薬品性樹脂層により形成され、一方円筒胴部及び底部
はポリエチレンテレフタレート／耐熱性且つ耐薬品性樹
脂／ポリエチレンテレフタレートの三層構造よりなり、
且つ内側ポリエチレンテレフタレート層は薄く形成され
、耐熱性且つ耐薬品性樹脂層は口部の方へ行くにつれて
厚くなっている２軸延伸成形壜体の予備成形品。Polyethylene terephthalate layer and polyarylate, blend polymer of polyethylene terephthalate and polyarylate, polycarbonate, poly-4-methylpentene-1 propylene/ethylene copolymer, 4-methylpentene-1 and linear α-olefin (carbon number 4) or 1
8) A preformed product with one end closed, formed by injection molding, consisting of a heat-resistant and chemical-resistant resin layer such as a copolymer with Resin / Polyethylene terephthalate / Heat-resistant and chemical-resistant resin / Polyethylene terephthalate / Heat-resistant and chemical-resistant The front and back surfaces of the resin are made of heat-resistant and chemical-resistant resin, and the outer surface of the opening end of the mouth is formed of a heat-resistant and chemical-resistant resin layer, while the cylindrical body and bottom are made of a three-layer structure of polyethylene terephthalate/heat-resistant and chemical-resistant resin/polyethylene terephthalate,
A preformed biaxially stretched bottle in which the inner polyethylene terephthalate layer is formed thinly, and the heat-resistant and chemical-resistant resin layer becomes thicker toward the mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61163450A JPS6319208A (en) | 1986-07-11 | 1986-07-11 | Premolded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61163450A JPS6319208A (en) | 1986-07-11 | 1986-07-11 | Premolded product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6319208A true JPS6319208A (en) | 1988-01-27 |
Family
ID=15774108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61163450A Pending JPS6319208A (en) | 1986-07-11 | 1986-07-11 | Premolded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6319208A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007525349A (en) * | 2004-03-01 | 2007-09-06 | エイサパック ホールディング ソシエテ アノニム | Multi-layer dose with concave surface |
| JP2018027785A (en) * | 2016-08-15 | 2018-02-22 | 大日本印刷株式会社 | Composite container and method for manufacturing the same, and composite preform and method for manufacturing the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59168219U (en) * | 1983-04-27 | 1984-11-10 | 株式会社 小林コ−セ− | Compact for paste cosmetics |
| JPS59184709U (en) * | 1983-05-25 | 1984-12-08 | 株式会社 小林コ−セ− | Compact for paste cosmetics |
| JPS6021213U (en) * | 1983-07-19 | 1985-02-14 | 株式会社 小林コ−セ− | Cartridge body for liquid cosmetics |
| JPS60126108U (en) * | 1984-02-02 | 1985-08-24 | 株式会社 小林コ−セ− | Compact for paste cosmetics |
-
1986
- 1986-07-11 JP JP61163450A patent/JPS6319208A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59168219U (en) * | 1983-04-27 | 1984-11-10 | 株式会社 小林コ−セ− | Compact for paste cosmetics |
| JPS59184709U (en) * | 1983-05-25 | 1984-12-08 | 株式会社 小林コ−セ− | Compact for paste cosmetics |
| JPS6021213U (en) * | 1983-07-19 | 1985-02-14 | 株式会社 小林コ−セ− | Cartridge body for liquid cosmetics |
| JPS60126108U (en) * | 1984-02-02 | 1985-08-24 | 株式会社 小林コ−セ− | Compact for paste cosmetics |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007525349A (en) * | 2004-03-01 | 2007-09-06 | エイサパック ホールディング ソシエテ アノニム | Multi-layer dose with concave surface |
| JP2018027785A (en) * | 2016-08-15 | 2018-02-22 | 大日本印刷株式会社 | Composite container and method for manufacturing the same, and composite preform and method for manufacturing the same |
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